S SHAMUS Joined Jun 17, 2009 Messages 294 Location Puget Sound, WA Jul 28, 2009 #41 Oops! I forgot to also ask since their ratings are greater than 20 microns, HOW MUCH GREATER? 25 - 30 - ???
Oops! I forgot to also ask since their ratings are greater than 20 microns, HOW MUCH GREATER? 25 - 30 - ???
